Change size of ticks and font in colorbar

Hello all,
I want to change the size of ticks and/or font of the colorbar, as by default it is too small. Can anyone help? I’m using 6.5.0 version.
Here is my line for this:
gmt set GMT_THEME=off
gmt get FORMAT_GEO_MAP
gmt colorbar -Dx7.5c/-.85c+w4c/0.15c+jTC+h+e -F+gwhite -Ccontinuous.cpt -B10g1
-B+tcontinuous -Bx -By+lmm/day

Thank you.
Cheers,

João Rocha